If this is a essay just say. the Mayas most remarkable achievement was the number system and say how it cjanged the world I did this essay in 6th grade just talk about how the number system was a good achievement
By roughly 6000 to 8000 years ago, agriculture was well under way in several regions including Ancient Egypt, around the Nile River; the Indus Valley civilization; Mesopotamia, between the Tigris and Euphrates rivers; and Ancient China, along the Yellow and Yangtze rivers.
